Epicyclic transmission with eccentric drive and thrust-transmitting bodies in stationary guide
AssigneeOtto Bock Orthopaedische Industrie KG
InventorEduard Horvath
Life of this patent
Estimating the term…
Abstract
An epicyclic transmission between a stationary member and a rotatable section of a prosthesis comprises a fixed ring gear secured to the stationary member, a driven ring gear of smaller diameter, and an annular planet pinion in mesh with both ring gears. The planet pinion is set in motion by a multiplicity of angularly spaced thrust-transmitting bodies, such as balls or pins, which are independently guided in apertures of an annular extension of the stationary member and bear upon an eccentric rigid with a drive shaft. The solid guide portions of this stationary extension can be used to accommodate energy-supply lines.
Claims10
An epicyclic transmission comprising:
- a stationary member;
- a fixed ring gear secured to said member;
- a driven ring gear coaxial with and adjacent said fixed ring gear, said ring gears being of different diameters;
- a drive shaft journaled in said member;
- an eccentric on said drive shaft offset from the axis of said ring gears;
- a multiplicity of independently movable thrust-transmitting bodies bearing generally radially upon said eccentric at peripherally spaced locations;
- stationary guide means for said bodies integral with said member;
- and
- a stepped annular planet pinion movably disposed between said guide means and said ring gears in meshing engagement with the latter, said pinion being internally supported by said bodies for displacement thereby upon rotation of said eccentric by said shaft with consequent relative rotation of said ring gears.
Dependencies are inferred from the claim text.